Thermodynamics And Statistical Physics Mock Tests

18 questions available

Thermodynamics And Statistical Physics Mock Test 1

Questions: 18

Sample Questions

GATE Physics

The partition function for a two-level system with energy levels 0 and ε at temperature T is:

A 1 + e^(-ε/(k_B T))

B e^(-ε/(k_B T))

C 1 - e^(-ε/(k_B T))

D 2e^(-ε/(k_B T))

GATE Physics

The second law of thermodynamics can be stated in terms of entropy as:

A the total entropy of an isolated system never decreases

B entropy is always zero

C entropy decreases in all spontaneous processes

D entropy is conserved

GATE Physics

The specific heat ratio γ = C_P/C_V for a monatomic ideal gas is:

A 5/3

B 7/5

C 4/3

D 1

GATE Physics

The equation of state for a degenerate Fermi gas at T = 0 K is:

A P = (2/5)nE_F

B P = nE_F

C P = (1/3)nE_F

D P = (3/5)nE_F

GATE Physics

The Boltzmann entropy formula relates entropy S to the number of microstates Ω by:

A S = k_B ln Ω

B S = k_B Ω

C S = k_B/Ω

D S = Ω/k_B

GATE Physics

The second law of thermodynamics implies that the entropy of an isolated system:

A never decreases

B always increases

C remains constant

D oscillates

GATE Physics

The entropy change in a reversible adiabatic process is:

A zero

B positive

C negative

D infinite

GATE Physics

The mean free path λ of gas molecules is inversely proportional to:

A number density n and collision cross-section σ

B temperature T only

C pressure P only

D molecular mass m only

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